Newtons Cradle, Pendulum, Newtons Cradle Desk Toy, Perpetual Motion Machine

• 【Educational Toy and Teaching Tool】Part from being a decorative piece, this newtons cradle also serves as an educational toy. It allows users, especially children, to visually understand and experience the concept of conservation of momentum and energy
• 【Quality Material】Cradle balance ball unique selection of steel ball base and sphere are made of high-quality material, each newtons cradle desk toy has been accurately measured, uniform weight, giving you a good rocking experience
• 【Relieve Stress】Balls toy is a charming desk decoration that can not only add beauty to the room, but also relieve your stress when playing
• 【Gift】This is a very good choice as a gift for friends and relatives
• 【Highly Rated and Easy to Maintain】Praised by countless customers for its natural appearance, ease of use, and durability

Product description Specification: Material:alloy Size:9/14/18cm(3.6/5.5/7.1") Color:as picture Package include: 1*Bumping Balls Newton Cradle Notes: 1. Due to various factors such as monitor brightness and light brightness, the actual color of the product may be slightly different from the picture displayed on the website. 2. Please allow for slight manual measurement bias in the data. Safety Warning This product is intended for educational purposes and as a desk toy to demonstrate the laws of physics. It does not require batteries to operate.